[PATCH] elf: Move elf_dynamic_do_Rel RTLD_BOOTSTRAP branches outside

[Fangrui Song]

On 2022-04-22, Andreas Schwab wrote:
>This breaks powerpc.
>
>https://build.opensuse.org/package/live_build_log/home:Andreas_Schwab:glibc/glibc/p/ppc

This is similar to the m68k breakage. This time the reordering of a GOT
load before self relocations makes ld.so fail..

https://sourceware.org/pipermail/libc-alpha/2022-April/138118.html
should fix it.